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Is adding phenolphthalein to sodium hydroxide a chemical change?
Wiki User
∙ 14y ago
The actual process of adding it is not. However, a chemical change does occur immediately after the addition.
Wiki User
∙ 14y ago
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If hydrochloric acid is added to sodium hydroxide the temperature increases but there is no visible change did a chemical or physical change occur?
A chemical change occurred. I really hope you did this experiment in a fume hood; adding a strong acid to a strong alkali usually creates a strong explosion.
What happens when sodium hydroxide is added dropwise to solution containg phenolphthalein?
At a particular point, the color of the indicator would change from colorless to pink (purple).
Is Sodium hydroxide dissolving in water a chemical or physical change?
physical
When placed in H2O a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms chemical or physical change?
It is a Chemical change
Is calcium nitrate plus ammonium hydroxide a physical change?
No, it is a chemical change. Rearrangement of atoms to make different compounds is one way to define a chemical reaction.
Is phenolphthalein a chemical property or a physical property?
Phenolphthalein itself is a chemical. It changing color is a chemical change.
Is hydrochloric acid and phenolphthalein a chemical change?
These are not changes but substances.The reaction is a chemical change.
What chemical change in orange?
You think probable to phenolphthalein used as a pH indicator.
Is calcium in water a physical or chemical change?
Adding calcium to water results in a chemical change because the calcium and the water that react are combined to form a distinct new substance, calcium hydroxide, that did not exist in either the calcium or the water before their reaction.
When phenolphthalein is added to ammonium hydroxide is the color of the final solution is pink?
Phenolphthalein is an indicator often used in chemical titrations. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. The more basic the solution the pinker the solution will become when Phenolphthalein is present.
Do sodium hydroxide dissolve fat grease and hair in a drain and is it a physical change or chemical change?
It is a chemical change.
If hydrochloric acid is added to sodium hydroxide the temperature increases but there is no visible change did a chemical or physical change occur?
A chemical change occurred. I really hope you did this experiment in a fume hood; adding a strong acid to a strong alkali usually creates a strong explosion.
What happens when sodium hydroxide is added dropwise to solution containg phenolphthalein?
At a particular point, the color of the indicator would change from colorless to pink (purple).
Is mixing iron iii chloride and sodium hydroxide a chemical or physical change?
It's a chemical change.
When copper sulfate mixed with sodium hydroxide is a form of physical change or chemical change?
Chemical change (which results in physical change).
Is hydrchloric acid reacting with sodium hydroxide to produce a salt water and heat a physical change or a chemical change?
It is a chemical reaction - a chemical change.
Is Reaction of hydrochloric acid with sodium hydroxide a chemical change?
yes its a chemical change you get table salt and water out of it
